Vehicle-body structure of vehicle

Abstract

A vehicle-body structure of a vehicle comprises a front side door provided so as to open and close an opening portion for entrance which is formed by a vehicle-body frame member. The front side door comprises a door panel portion and reinforcement portions provided at a peripheral part of the door panel portion such that at least part of the reinforcement portions overlaps with the vehicle-body frame member in a vehicle side view, the reinforcement portions being configured to reinforce the door panel portion such that when a collision load is inputted to the front side door in a vehicle side collision, a connection state of the door panel portion and the vehicle-body frame member is maintained.

What is claimed is: 
     
       1. A vehicle-body structure of a vehicle, comprising:
 a vehicle-body frame member forming an opening portion for entrance at a vehicle side part, the vehicle-body frame member including a side sill extending in a longitudinal direction at a lower part of the vehicle, a hinge pillar extending upwardly from a front end portion of the side sill, a roof side rail, and a center pillar extending in a vertical direction and interconnecting a central portion, in the longitudinal direction, of the side sill and a central part, in the longitudinal direction, of the roof side rail; and 
 a side door provided so as to open and close the opening portion, 
 wherein said side door comprises a door panel portion and a reinforcement portion provided at a peripheral part of the door panel portion such that the reinforcement portion overlaps with said vehicle-body frame member in a vehicle side view, said reinforcement portion being configured to reinforce said door panel portion such that when a collision load is inputted to said side door in a vehicle side collision, deformation of the peripheral part of the door panel portion is suppressed and a connection state of the door panel portion and said vehicle-body frame member is maintained; 
 wherein said vehicle-body frame member comprises a vertical wall portion extending in a vehicle longitudinal direction and in a vertical direction at said opening portion, at least part of said peripheral part of the door panel portion overlaps with said vertical wall portion in the vehicle side view, and said reinforcement portion is provided to overlap with said vertical wall portion in the vehicle side view, the reinforcement portion being configured to reinforce the door panel portion such that when the collision load is inputted to the side door in the vehicle side collision, deformation of the peripheral part of the door panel portion is suppressed and a contact state of the door panel portion and said vertical wall portion of the vehicle-body frame member is maintained; 
 wherein the vertical wall portion comprises a side-sill side wall portion of the side sill, a side-sill flange positioned at an upper-side end portion of the side sill, a hinge-pillar side wall portion of the hinge pillar, a hinge-pillar flange positioned at a back of the hinge pillar, a center-pillar side wall portion of the center pillar, a center-pillar flange, and a roof-side flange of a roof-side outer panel of the roof side rail; and 
 wherein when the collision load is inputted to the side door in the vehicle side collision, the deformation of the peripheral part of the door panel portion is suppressed and the contact state of the door panel portion and each of the side-sill side wall portion, the side-sill flange, the hinge-pillar side wall portion, the hinge-pillar flange, the center-pillar side wall portion, the center-pillar flange, and the roof-side flange is maintained. 
 
     
     
       2. The vehicle-body structure of the vehicle of  claim 1 , wherein said door panel portion comprises a door inner panel positioned on an inward side, in a vehicle width direction, of the side door and a door outer panel positioned on an outward side, in the vehicle width direction, of the side door, a peripheral portion of said door inner panel comprises a first door wall part provided to overlap with said vertical wall portion of the vehicle-body frame member in the vehicle side view and extending along the vertical wall portion and a second door wall part extending in the vehicle width direction and forming a ridgeline together with said first door wall part, and said reinforcement portion is provided at said peripheral portion of the door inner panel such that the reinforcement portion straddles said ridgeline between the first door wall part and the second door wall part. 
     
     
       3. The vehicle-body structure of the vehicle of  claim 1 , wherein said reinforcement portion is a plate member. 
     
     
       4. The vehicle-body structure of the vehicle of  claim 1 , wherein said reinforcement portion is a plate member. 
     
     
       5. The vehicle-body structure of the vehicle of  claim 2 , wherein said reinforcement portion is a plate member.